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3.5 × 1.2 mm 4 pins side-emitting

XL-3512RGBW-2812B

3512 · smd · Xinglight 2812B (12 mA, 0.25/0.47 us windows, reset 80 us) · Xinglight

1-wire RGB 3.5–5.5 V active

Also sold as XL-3512RGBW-WS2812B

At a glance

Colour
RGB8 bits per channel
Data
1-wiretimed pulses on one line
Supply
3.5–5.5 Vno backup data line
Size
3.5 × 1.2 × 1.6 mm4 pins · side
Max current
36 mA12 mA per channel
PWM
1.5 kHzreset 80 µs
Library support
FastLED WLED Adafruit

Datasheets disagree: feature list “preset 5 mA / channel” against ILED01 12 mA in the electrical table; filed on the table value (xl-2812b-t2-12ma).

Variants

One row per orderable SKU. Everything not listed is inherited from the part above.

Order codeFaceLensWhite PinsSiliconStatusFirst seenDatasheet
XL-3512RGBW-2812B — — — 4 — active 2025-09-08 PDF
Named RGBW; 24-bit GRB frame on the sheet. Recorded as 3-channel. LCSC stock 7,590 on 2026-10-15.

Pinout

XL-3512RGBW-2812B
XL-3512RGBW-2812B 3512 package, top and side viewPin 1 is ringed. pin 1 GND (ground), pin 2 DO (data out), pin 3 VDD (power), pin 4 DI (data in).11 GND22 DO33 VDD44 DI3.5 mm1.3 mmfront view (lens face)1.6 mm deepside view (end-on, light leaves the right face)
  • Ground
  • Data
  • Power
  • Pin 1

Outline and pin positions checked against the manufacturer datasheet (C49237874 XL-3512RGBW-WS2812B p11 (front, bottom views and labels DI VDD DO GND)). The sheet labels the four pads DI, VDD, DO, GND from left to right in the front view; the table numbers GND = 1, so pin 1 is the right-hand pad as drawn. Side-view package: four pads in a row on the mounting edge; pad size and pitch estimated from the drawing. What this means.

  1. 1 GND ground
  2. 2 DO data out
  3. 3 VDD power
  4. 4 DI data in

Protocol — Xinglight 2812B (12 mA, 0.25/0.47 us windows, reset 80 us)

Timings shown from datasheet.

Xinglight 2812B (12 mA, 0.25/0.47 us windows, reset 80 us) bit timingXinglight 2812B (12 mA, 0.25/0.47 us windows, reset 80 us) bit timing: a zero bit is 250 nanoseconds high then 1000 low; a one bit is 850 high then 400 low; reset 80 microseconds low1 · Bit encoding, to scaleDINhighlowbit 0 period 1250 nsbit 1 period 1250 nsT0H 250 nsT1H 850 nsT0L 1000 nsT1L 400 ns"0" bit"1" bit02505007501000125015001750200022502500time, ns2 · One frame: 24 bits, most-significant bit firstDIN170110010007100110101700101100bitch 1 · 8 bitsch 2 · 8 bitsch 3 · 8 bitsChannel order not recorded for this protocol · frame = 24 × ~1250 ns ≈ 30 µs · example data, first bits 1 0 1 …3 · RESET / latchlast bits of frame 1first bits of frame 2LEDs latch the data they receivedRESET: DIN low ≥ 80 µs (not to scale)4 · Cascade: each DOUT feeds the next DINMCULED 1DINDOUTLED 2DINDOUTLED NDINDOUTLED 1 keeps the first 24 bits, re-shapes the signal and sends the rest out on DOUT;LED 2 keeps the next 24, and so on. The last LED's DOUT is left unconnected.
T0H 250 / T0L 1000 · T1H 850 / T1L 400 ns · period 1250 ns · reset 80 µs source: datasheet

Compatibility

  • protocol compatible WS2812B

    Only the sheet title (XL-3528RGBC-WS2812B, "WS2812B functional characteristics") claims it. The windows (0 code high up to 0.47 us, 1 code high from 0.58 us) bracket the WorldSemi WS2812B values (0.4 / 0.8 us), the symmetric typical column does not. source ↗

Dating evidence

Nobody announces these parts, so this records what we can actually cite rather than a release date. Library support proves only that the part existed by that date.

  • 2025-09-08 estimate PDF CreationDate metadata of Xinglight sheet XL-3512RGBW-2812B (LCSC C49237874); the sheet has no revision table, so this is only the date the PDF file was produced ↗ day
  • 2025-09-08 estimate PDF CreationDate metadata of Xinglight sheet XL-3528RGBC-2812B (LCSC C5440693); the sheet has no revision table, so this is only the date the PDF file was produced ↗ day

Where to buy

Stub data — a few rows so purchase links can grow later. Prices are not tracked.

Similar parts

Same protocol or package first, then the same data scheme and colour channels.

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